CHATHAM COUNTY DEPARTMENT OF ENGINEERING NEIGHBORHOOD TRAFFIC CALMING POLICY MISSION The Chatham County Department of Engineering (hereinafter referred to as Department) routinely receives requests for the installation of speed bumps/humps to reduce the volume and speeds of vehicles traveling through residential neighborhoods. Chatham County does not install speed bumps or speed humps because they are an unanticipated hazard in the roadway that can delay emergency response and impede drainage. In addition, they create noise from cars bottoming out and from vehicles braking and accelerating, which reduces the quality of life of residents living adjacent to these features. However, there are other alterations that can be made to the roadway to help slow traffic traveling through residential neighborhoods and to deter cut through traffic. This policy shall establish a set of standard criteria that will be used to determine the applicability of the traffic calming features discussed below. ITE defines traffic calming as “The combination of mainly physical measures that reduce the negative effects of motor vehicle use, alter driver behavior, and improve conditions for non-motorized street users.” When these features are applied to neighborhood streets, the goals are as follows: Reduce the speed of vehicles in residential areas for 85% of vehicles to a safe legal speed. Reduce the volume of cut-through traffic. Make the streets safer, in general Make the streets safer for pedestrians and cyclists Improve the quality of life for the County’s residents The Department will consider the following types of features, either singularly or in combination within residential neighborhoods to reduce cut through traffic or reduce vehicular speeds: Striping/Pavement Markings/Signage Roundabouts/Mini-roundabouts/Intersection Re-alignment Geometric Measures o Lane Narrowing/Intersection Throating o Chicanes/Diverters/Partial Diverters o Forced Turn Island/Turn Movement Restrictions Electronic Radar Speed Signs (*Paid for by HOA/Residents) Sidewalks/Bike Lanes
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CHATHAM COUNTY DEPARTMENT OF ENGINEERING ...engineering.chathamcounty.org/Portals/engineering/forms...If the results of the speed study indicate the traffic speeds do not meet the
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CHATHAM COUNTY DEPARTMENT OF ENGINEERING
NEIGHBORHOOD TRAFFIC CALMING POLICY
MISSION
The Chatham County Department of Engineering (hereinafter referred to as Department)
routinely receives requests for the installation of speed bumps/humps to reduce the volume and
speeds of vehicles traveling through residential neighborhoods. Chatham County does not
install speed bumps or speed humps because they are an unanticipated hazard in the roadway that
can delay emergency response and impede drainage. In addition, they create noise from cars
bottoming out and from vehicles braking and accelerating, which reduces the quality of life of
residents living adjacent to these features. However, there are other alterations that can be made
to the roadway to help slow traffic traveling through residential neighborhoods and to deter cut
through traffic.
This policy shall establish a set of standard criteria that will be used to determine the
applicability of the traffic calming features discussed below. ITE defines traffic calming as “The
combination of mainly physical measures that reduce the negative effects of motor vehicle use,
alter driver behavior, and improve conditions for non-motorized street users.” When these
features are applied to neighborhood streets, the goals are as follows:
Reduce the speed of vehicles in residential areas for 85% of vehicles to a safe legal
speed.
Reduce the volume of cut-through traffic.
Make the streets safer, in general
Make the streets safer for pedestrians and cyclists
Improve the quality of life for the County’s residents
The Department will consider the following types of features, either singularly or in combination
within residential neighborhoods to reduce cut through traffic or reduce vehicular speeds: